Record controlled typewriting mechanism



April 1,.1941. wm v 1 2.237.268

RECORD CONTROLLED TYPEWRITING IIECHANISM Filed Oct. 26, 1939 l3 Sheets-Sheet l bin Inventor E. BALDWIN:

A ltorrie y P 1- R. E. BALDWIN 2,237,268

RECORD CONTROLLED TYPEWRITING IECHANISH Fild Oct. 26, 1959 13' Sheets-Sheet 2 Inventor H-E. BALDWIN;

A ltorney April 1941- R. E; BALDWIN 2237.268

RECORD CONTROLLED TYPEWRITING IECHANISI Filed 06a. 26, 19:59 1s Sheets-Sheetfi '[nventor I R-E-BAL WM A ltor'ney April 1, 1941. R. E. BALDWIN 2,237,268

:mcoan CONTROLLED TYPEWRITING uscmmrsu Filed Oct. 26, 1939 13 Sheets-Sheet 4 Inventor R.E BflLDWI/V.

I Attorney April 1941. R. E. BALDWIN 2.237.268

RECORD CONTROLLED TYPEWRITING IBCHANISI Filed Oct. 26. 1939 1s Sheets-Sheet s .Fig. 3.

, I nventor R-EBALDI/IN.

April 1, 1941. R. E. BALDWIN 2.237.268

RECORD CONTROLLED TYPEWRITING IECHANISH Filed Oct. 26, 1939 l3 SheetsSheet 6 Inventnf Attorney 1 P v R. a BALDWIN 2.237.268

RECORD CONTROLLED TYPEWRITING IECHANISK Filedbc t. 2a, 1939 13 Sheets-Sheet 7 Rf. BnLow/M Attorney April 1,1941; R. E. BALDWIN RECORD CONTROLLED TYPEWRITING IECHANISII 13 Sheets-Sheet 8 Filed Oct. 26, 1939 mm 8 2w N mm 8 &

RJE BALOh/IM Ap 1. R. 2. BALDWIN I 2.237.268

RECORD CONTROLLED 'I'YPEWRITING' IECHANISH Filed 001;. 26, 1939 13 Sheets-Sheet 9 o\ "a e g 8 Q g p Fig.8.

R. E. BALDWIN RECORD CONTROLLED TYPEWRITINGIE CHANISM April 1, 1941;

Filed on. 26, 1939 13 Sheets-Sheet 1-0 BHLDMM Fig. 9.

A Home y April Q R. E. BALDWIN 2.237.268

RECORD CONTROLLED TYPEWRI'I'INCY IECHANISI Filed ed. 26, 1939, 13 Sheet-Sheet 11 Fig 10A.. 6861661; 167 i: Q 169 168a Fig. 105.

Fig. 10.

11'1 113 161 166a by A lforney April 1, 1941. R. E. BALDWIN RECORD CONTROLLED TYPEWRITING IECHANISM l3 Sheets-Sheet 12 Filed Oct. 26, 1939 Inventpr I R- E. BApon/ml Attorney Fig; 11.

I 8 pril 9 1 I R E. BALDWIN ..2 .237 26 RECORD CONTROLLED TYPEWRITING IECHANISI Filed Oct. 26, 1939 15 ShGGiS-ShQBt l3 QQWMD) Inventor R45, snow/M Attorriey hole is rendered inoperative.

than when the othercontrol hole is sensed alone,

Patented Apr. ,1, 1941 2,231.26: a'iicoan oon'raounn 'ririmwiirrmc. micnmsn Richard Everest Baldwin, Thornton Heath. England, aslignor to Powers Accounting Machines Linii1m mtg, London, England, a company of Great Application mm 26, 1939, Serial No. 302,391 in Great Brltainoctober as, 1933 1 cmiiii. (01497-20) This invention relates to record controlled typewriting mechanism and has for its object to provide a construction of such mechanism which will operate relatively rapidly and which can be utilised for the printing on a record card of an interpretation of records contained in each column thereof. J I

According to the present invention a record controlled typewriting mechanism comprises in combination a plurality of pivoted type levers Fig. 8 is a section through the sensing mechaeach bearing two or more characters, means for nism and the type lever controlling mechanism, m s perforated record step by step. One mg. 9 is a section of the type lever controlling umn at a time, means operative under the conmechanism similar to that shown in Fig. 8, but trol of means actuated, when any hole within a with the parts in a different position, Drtdetermined range of hole positions in a 001- L Fig. 10 is an outside elevation of the type lever umn is sensed, to select for operation a corre-' sponding type lever, means operative, when a control hole in the same column is sensed, to shift the pivot for the type levers so that when the T selected type lever operates, a different character strikes the printing surface, and means for actuating the selected type lever.

Preferably, the mechanism includes means whereby when the control hole alone is sensed, not only is the pivot for the type levers shifted,

hole is selected for operation, together with means whereby when another hole in the same column is contemporaneously sensed the means for selecting the type lever corresponding to the control If desired'according to the present invention the typewriting mechanism may include means for sensing two control holes in a column, means whereby when either control hole is sensed alone,

a type lever common to both control holes is selected for operation, together with means whereby when one control hole is sensed alone, the pivot for the type levers is shifted to a greater extent and means whereby when another hole in the same column is sensed together with either control hole the means for selecting the type lever corresponding to the control holes is rendered inoperative.

Constructions according to the invention are particularly intended for use in printing on a record card an interpretation of the records punched therein and an example of such a con- 25 but also a type lever corresponding tosaid control Fig. 3 is a plan,

Fig. 4 is. a diagrammatic perspective view of the card feed mechanism,

Fig. 5 illustrates the escapement mechanism 5 for the card carriage,

Fig. 6 shows the escapement mechanism in an'-. other position,

Fig. '7 shows the escapement mechanism in a position in which it is locked out of operation,

controlling mechanism,

Figs. .lOA, 10B and 100 are diagrams showing the relative positions assumed at different times by certain of the elements which appear in Fig. 10,

20; Fig. 11 is an outside elevation of the type lever controlling mechanism viewed from the side op- 7 posite from that seen in Fig. 10, and

Fig. 12 is a perspective view of certain levers and their operating cams.

In the construction illustrated in the drawings the machine comprises a frame I supported on a base 2 by means of legs 3. Secured to the front side of the frame at its left hand endin Fig. 2

is a plate 4 and projecting from the frame in 3 same region are two bars 5 to the opposite ends of which is secured another plate 6.

The plates 4 and 8 constitute the side walls of the card magazine, of which the end wall is con stituted by a third plate I.

Passing freely through holes in the bars 5 is a guide rod 8 to which are secured two transverse bars 9. To the bars 9 there is secured by means of screws ill the card feeding slide l I carrying the card picker l2. W The slide H is reciprocated by the following mechanism from a crank arm l3 secured to a shaft l4. Secured to a shaft l5 freely mounted in the frame l is a stirrup member it between 5 the arms of which is mounteda rod ll pivotally connected to the crank II by a link l8. Also secured to the shaft I5 is an arm l9 pivotally connected to one of the blocks 9 by a link 20. The

manner in which the shaft F4 is driven will be stniction will now be described, with reference described later. Connected between the rod l'lto the accompanying drawings in which- Figs. 1 and 1A together constitute an elevation of the front of the machine,

Figs. 2 and 2A together constitute an elevation of the back of the machine,

and a fixed anchorage 20 on the frame of the machine, is aspring 22 and one arm of, the stirrup. member It has an extension 23 pivoted to the plunger rod 24 of a dash pot 25.

56 A1 9 mounted on the frame I is a travelling card grip it. The carriage 26 then returns step bystep to the right and during this movement the slide I l is under the control of the carriage so.

that it also returns step by step to the left.

Mean for performing these operations will now be described.

The step by step movement of the carriage 26 from left to right takes place under the action of the spring 22 and is controlled by an escapement mechanism which will be described later. The carriage is returned from right to left positively in the following manner.

Pivoted to the base l6 at 66 is a link 6| of which the other end is pivoted at 62 to a pantograph constituted by links 66a, 66b, 66c and 66d. Link 33a is pivoted at 64 to a bearing plate 66 screwed to the fixed frame I and link 66d is pivoted to a pin 36 secured to the moving carriage. This pantograph multiplies the movement of pivot 32 by four.

The lower gripper 26a is screwed to the carriage 26 by two screws 31 which also pass through the upper gripper 26 with sumcient clearance to allow the latter to rock.

Pivoted at 36 to the upper end of a lug 66 bent up from the upper gripper 26 is one link 46 of a toggle and pivoted at 4! to a lug 42 bent down from the lower gripper 26a is the other link 43 of the toggle. The two links are also pivoted together at. The link 42 has an extension 45 which by bearing'against the pivot pin 36 prevents the toggle from moving beyond the straightened position.

Secured to the lower gripper 26a is a vertical lever 46 which passes with clearance through the upper gripper 26 and has a spring 41 tending to keep the gripper closed. When the toggle is in the straight position, however, it holds the grippers open.

In Fig. 1 the carriage 26 is moving from left to right and on reaching the right hand .end of its travel the extension 45 strikes a fixedv stop .8 whereby the toggle-is broken and the spring carriage then commences moving step by stepfrom right to left in Fig. 1.

spring 66 tending to move the pawl into engagement with'the rack 66.

Formed in the pawl 64 i a round hole 61 in which engages a pin 66 on the lever 56, the spring 66 acting to maintain the bottom of the hole against the pin 66. g

Pivotedto the plate 62 at 66 is a detent pawl 16 which is also pivoted at 'II to the lever 66.

Thus as the lever 66 is rocked counterclockwise by the cam 5| the link 66 is pushed up and rocks the lever 66, 66' clockwise about pivot 6|.

. Thereby the pawl 64 is moved into engagement with rack 66 and the pawl 16 is withdrawn from engagement with the said rack. When the high 1. part of cam 5| leaves the roller 52 the spring, 56 rocks lever 66 clockwise whereby pawl 64 is withdrawn from engagement with rack 66 and pawl 16 is moved into engagement therewith.

During the step by step movement of the carriage 26 from left toright (Figs. 2 and 5) the card feeding mechanism must be held out of operation whereas during the return of the car-- riage from right to left the escapement pawls 64 and I6 must be held clear of the rack 63.

In order to interrupt the card feed during the step by step movement of the carriage 26 the shaft 56 rotates, the. gear 12 and shaft l4 are The step by step movement of the carriage 2G is controlled by an escapement mechanism which is constructed as;follow (Figs. 5,6 and '1).

Securedto a shaft 56 from which the shaft I4 is driven in a manner which willbe explained later is a cam 6| co-operating with a roller 62 on a lever 53 pivoted to the machine frame at 54. A spring'56 tends to hold the roller 62 against the cam 5|.

Between the pivot 54 and the 53 a link 56 is pivoted to the lever at 61 and the upper end of this link is pivoted at 66 to a lever 56, 66 pivoted at 6| to a plate 62 secured to the frame I of the machine.

Secured to the carriage 26 is a rack 66 and freely mounted on the pivot 6| is an esc pement pawl 64 having a tail is to which is attacbd a other end of lever rotated counterclockwise and the slide II and picker l2 advance the card from left to right to meet the grippers 29, 26a on the carriage 26. As the carriage 26 approaches the left hand end of the travel the grippers 26, 26a close on to the card in the manner already described. The cut.- away portion A-B of the gear 12 has not however quite reached the pins I4 and accordingly the bail l6 continues for a short time to move counterclockwise in'Fig. 2 thereby pushing the link-2| still further to theright. The carriage 26 is by this time at the extreme left hand and of its travel and cannot move any further. Accordingly the link 6| bends slightly owing to its length and the springiness of the metal of, which it is made, thereby affording to the carriage a I dwell sumcient to enable the grippers 26, 26a to grip the card.

when the crank it is just past its dead centre position in Fig. 2 the cut-away portion A-B of the gear fl2 comes into register with the pins I4 and accordingly the drive of the shaft l4 from the shaft 66 is interrupted. g

The spring 22 (Figs. 1 and 4) now rocks the bail l6 clockwise in Fig. 2 thereby driving the shaft l4 (still in the counterclockwise direction) andpulling the link 6| to the left (Fig. 2) and the carriage 26 to the right.

During this movement the carriage moves step by step under .the control of the escapement pawls 64 and I6 which have now been rendered operative by means ofmechanism which will be described later.

The wheel 12 therefore rotates step by step and the slide II and card feeding picker l2 are returned step by step to the left in Figure 2.

Pivoted tothe wheel 12 at I5 is a. plate 16 having teeth TI. This plate is normally held by a spring 16 against a stop 16 in a position in which the teeth 11 form a continuation of the teeth of the gear wheel 12..

The plate 18 is a safety device whereby as the end B of. the cut-away portion is .approaching the pins 18, the plate 18 will yield if a pin" should engage vwith the top; of one of the teeth 11 and eventually permit correct register of the pins I8 with the teeth of the wheel 12.

In order to render the escapement pawls 88 and 18 inoperative during the return of the carriage 28 from right to left the following mecha-- nism isprovided.

Freely mounted on the pivot 8| is a depending arm 88 terminating in a hook 8| and having a lateral extension 82-at its upper end. Pivoted to the free end 88 of this extension 82 is a rocker 88 having a spring88 connected to a pin 88 on the extension 82 and tending to turn the rocker clockwise. This clockwise movement of the rocker is limited by a lug 8'| thereon which engages under the extension 82,

Mounted on the carriage 28 is a cam bar 88 (Fig. 'l)

When the carriage 28 is at the right hand end of its travel the cam bar 88 is clear of the rocker 88 (Fig. 7 position) and a spring 88 is lever in the raised position so that the cam 8| no longer operates the lever 83.

In this position of lever 88 the link 88 has rocked lever 88, 88 clockwise thereby withdrawing pawl I8 from engagement with the rack 88.

Secured to the arm 88 is a hook 8| overlying the pawl 84 and when the spring 88v rocks the arm 88 counterclockwise the hook 8| pulls the pawl 84 down out of engagement with the .rack 88, the hole 81 in the pawl permitting this move- Thls position of the parts is shown in when the pawls 88 and 18 are thus disengaged the spring 22 pulls the carriage 28 still further to .the right until the teeth of wheel "re-engage the pins 14. The latter then drive the wheel 12, and the carriage 28 moves slightly further. to the right until the dead centre position of crank I8 is reached. During these movements of the carriage to the right the grippers 28, 28a are opened to release the card in the manner already exwhich will be described later. 7

The carriage 28 is' then returned to the left in'Fig. 2 by the positive drive of the pins I4 and gear wheel 12. After the carriage has moved a short distance to the left the end 82 of the cam bar 88 strikes the rocker 88 and swings it counplained, and the card is elected by mechanism the pins 14 the cam surface 93 engages e lug u on the rocker and pushes it bodily downwards (Fig. 8 position) thereby rocking'the 'arm 88 clockwise and releasing the lever 88 and also the pawls 88 and I8 so that the escapement mechanism'is operative again.

During the movement of thecarri age "to the wire at tion, until the end 82 of the cam bar 88 beyond it whereupon the spring 88 rocks the arm 88 counterclockwise to the Fig.''! position. 7 The cam bar 88 is made removable so that it can be replaced by a bar of different form to permi't certain fields of the card to be skipped if desired. In .order to effect skipping the cam bar would have one or more portions cut out of its under edge to a depth equal to that of the cam surface 88 and of}; length corresponding to th number of columns to be skipped.

In order to permit removal of the bar 88 it is slotted at 88 to engage pins 88 on the carriage 28 and a latch 81 is pivoted to the carriageat 88.

This latch has a spring 88 whereby it is normally maintained in engagement with a recess I88 in the cam bar 88. To remove the bar-88 the latch 811s lifted clear of the recess I88 by hand and the bar 88 is slid to the right (Fig. '7).

When the carriage 28 travels step by step from left to right in Fig. 2 it'advances the card over a column of sensing pins |8| which sense the cardecolumn by column. There are twelve sensing pins |8| disposed in a column beneath the path of the card and each pin constitutes in effect the head of a Bowden cable of which the casing is; indicated at I82 in Fig. 8 and the inner 88. The mounting of the sensing pins is as follows.

Projecting from the machine frame I is a from the machine frame and connected at its.

right hand end (Fig. 8) to the corresponding end of the channel member I88 by a bar casting.

Each pin |8| has a collar 8' and'between the collar 8 and the rib I81 is a spring I tending to raise'the sensing'pim' Above the pins is a pin plate-H2 having twelve holes, one for each pin.

The card C is delivered by the slide between the bar I88 and plate H2 to the grippers 28, 28a in the carriage 28 which positions the cardwith the first column over the sensing'pins |8l.

Pivoted at one end tothe frame I and at the other end- (at 8) to the casting I88 is a bail I it which overlies the collars 1 I8 on all the pins IN. This ball -I Ills depressed at each revolution of the shaft 88 while the carriage 28 is moving under the control of the escapement. The depression of the ball pushes all the sensing pins |8| down-clear of the card C and the carriage also held down out of thepatth of the card.

Ten of the sensing pins |8| represent the digits 0 to 9 and-the other twopins |8|a and I8Ib. represent the letters A and B respectively. In order to produce the remaining letters of the alphabet.

code punching is employed, the A hole together with one or other of the holes representing Oto 8 serving to represent one or other of the letters right the rocker remains in this depressed posi C to N, while the B hole together with one of the standing of the invention, the latter mechanism will now be described (Figs. 8 .to 11).

' holes representing to 9 is used to represent the As already explained each sensing pin constitutes in effect the head of a Bowden cable. In the case of the sensing pins IOI representing the values 0 to 9 the other end of each Bowden cable bears against one arm II9 of a bell crank pivoted on a rod I fixed between the side plates I2I, I22 of a frame secured to the main frame of the machine. The plates I2I and I22 are also connected together by four rods I23, I24, I and I25.

Each bell crank also has a horizontal arm I21 and a spring I23 attached to each arm I21 tends to rock the associated bell crank clockwise in' Figs. 8 and 9.

When the bafl II4 moves down and withdraws all the pins IOI from the card, all the bell cranks II3, I21 are rocked counterclockwise into a position in which the free end of each arm I21 comes into register with a nose I on a correspondin type bar disabling lever I3I These disabling levers I3I are all freely pivoted on a rod I32 carried between two depending arms I33, I34 pivoted by means of trunnions I35, I35a between the plates I2I, I22 and connected by a bar I30 to form a frame which is rockable about the rod I35. a

The arm I33 is formed integral with a hori- Each type lever m, I41a is provided with a tail I from'which is suspended by a pivot I40 an actuating hook I of which the hook portion I5I- is in register with an operating bail I52 carried by two arms freely mounted on the rod I25. Pivoted to one of the arms I53 at I54 is a plate I55 having a lug I55a bent off at right angles to it (Figs. 11 and 12) and screwed to this lug is a link I55b pivoted at I55 to a lever I51 pivoted at its other end to thestub shaft I42. Lever I51 carries a roller I50 held in engagement with a cam I53, secured to shaft 50, by means of a spring I50. At each step movement of the card carriage 25 the arms I53 are rocked by the cam I53 and if any hook member I50 is engaged with the bail I52, said hook member will be lifted and will cause the corresponding type member I41 or I410. to swing down into engagement with the card and make an impression thereon.

All the hook members I50 are urged by springs I5I- into engagement with the actuating bail I52 and with each hook member is associated a disabling lever I3I referred to above. As already explained, when a columnis sensed, all the pins IOI which do not find a hole in the column are prevented from-rising and therefore the horizontal portions I21 of the corresponding bell cranks remain in engagement with the corresponding disabling levers I3I. The frame I33, I34, I35 carrying the disabling levers I3I is then rockedcounterclockwise in Fig. 9 and by reason I of the engagement of the noses I30 on the diszontal arm I31 pivoted at I" to a link I" of.

which the lower forked end is pivoted at I40 to a lever I (Fig. 12) which is pivoted at its other end on a stub sh'aftj I42 fixed to the machine frame. The lever I41 carries a roller I43 holein the columnconcerned will rise to its fullest extent and permit the associated bell crank II5, I21 to rock clockwise under the action of its spring I20, thereb bringing its arm I21 above the nose I30 on the corresponding type bar disabling lever I3I. Those pins IOI which find no hole are prevented from rising by engagement with the under surfaceot the card and therefore stand in the path of the noses I30 on their corresponding type bar disabling levers I3I.

Mounted on a rod 140 in the upper part of the frame I2I, I22, is a series of eleven type levers I41, I410 of which the first bears the letters A and B only, the second bears the characters ,0. C and P, the third'bears the characters 1, D and Q, the fourth bears the characters 2, ll: and R and so on. The A and B lever is-indicated at I41a in the drawings and the other type levers at I41. The rod I40 on which these ablin levers corresponding to the sensing pins which have not found a hole with their corresponding bell cranks I21 the said disabling levers I3I are tilted counterclockwise about their pivot rod I32 so that they swing the associated hook members I50 clear of the actuating bail I52. Consequentlyonly that hook member I50 corresponding to that sensing pin IOI which has found a hole in a card engages with the actuating ball I 52 to produce operation of the corresponding type lever I41; for example, if there is a'hole representing the digit 3 in a column. then only the hook member associated with the type lever carrying the digit 3 will engage with the actuating ball. I

As soon as the actuating bail I52 has begun to lift, the disabling levers I3I are free to return under the action of the frame I33, I34 carrylng them. This brings them out of contact with the hook members I50 and also the bell cranks I21, enabling the sensing pins IOI to return clear of the card while the type lever which is to print descends. Should two holes have been punched in error, two type levers will descend, so that they will push each other clear of the slot in a plate I02 (Fig. 8) which normally aligns the type levers ,are' pivoted is of arcuate form, the.

the head of the column containing the hole or.

holes which controlled the actuation of the type lever.

type. Thus neither will print, the blank drawing attention to the error in punching. I

The foregoing explains how the digits .0 to are printed. The means for controlling the printing of the alphabetical characters will now be explained. I

As already mentioned, each of the type levers I41 except the first I41a, which carries only the letters A and B, bears three characters, a numeral and two letters. The arcuate rod- I40 on in question. In this connection it may be exermost character to print, the arcuate pivot rod I46 is moved horizontally to the right to a still greater extent.

. In order tocontrol this case shift operation the A and B hole positions on the cardare employed. When the A hole is sensed, the Pivot rod-l5 I46 for the type levers is shifted to its first position so that if the column contains a second hole, for example in the 4 position, the middle character on the 4 type lever will strike the card at the desired position, this character being in the.

present example the letter H. If the column contains the A hole alone, then the -A and B type lever I41a will be actuated and the case shift will also operate to bring the character Avinto printing position, the letter A being in the middle position on the A and B type lever.

If a hole in the B position occursthen the pivot rqd- I46 for the type levers will move into its sec- .ond position so that if for example a hole in the 4 position is also present in the column, the low-,30

ermost character on the 4 type lever, namely the letter U will print.

The pivot rod I46 for the type levers isso disposed in relation to the card that when no type lever is in contact with the card, the pivot rod,35 is located away, from the card and does not over-' lie it. Since printing is effected at the head of a column, when case shifting occurs, so that, for example the middle character on a type leve'r the upper character will tend to print at a posi-- tion further towards the centre of the card. The lower character will not tend to print since it will be clear of the edge of the card. On the other hand, if a B hole is sensed and the pivot 5 rod I46 for the type levers-moves to its second position, then all threecharacters will overhang the card and all will tend to print simultaneously.

Means is therefore provided according to the invention, for ensuring that when a middle or lower character is printing, only that character whichis in register with the edge of the card at the head of the column is permitted to print.

In orderto control .the case shift, the following mechanism is provided:

For each of the A and B sensing pins IIlIa, IOIb a bell crank I65a, I65b respectively is provided pivoted on the same shaft I20 as the other bell cranks I I9-'-I21 and having one vertical arm in engagement with a corresponding Bowden cable IIl2a, "12b connected tothe corresponding sensing pin Illla, III"). The other arm I66wa, I66b of each of these bell cranks is not horizontal but is inclined downwardly (Fig. 10). Disposed adjacent the lower ends of these inclined arms of the two bell cranks is a lug I61 having two steps I66a, I68b formed thereon, this lug being .bent off from a lever I69 which is pivoted at the same point I as the rockable frame I33, I34 carrying the rod I32-on which the type lever disabling members I3I are pivoted. This lever I69 has an upwardly directed extension I10 and is urged by a spring I1I in a direction such that the stepped lug I61 is urged towards the lower ends of the inclined arms I66a, I66b of the A and B bell cranks.

The pivoted lever I69, I10 is formed with a I projection I12 held by a spring I13 in contact with the head of a screw I13 serving to secure one end of the shaft I32 to the arm I34. When the arms l33, I34 carrying the pivot rod I32 for the disabling members I3I are in their normal position (over to the left in Fig. 9) the lever I69 is in what may be called the A posi tion, and when the arms I33, I34 carrying the said pivot rod move, the movement is, such that if unobstructed, the lever I69 can. move into what may be called the numerical position.

If the card column which is being sensed does not contain an A or a B hole then the A and B pins II'IIa, IIIIb will both be held' down and the cables IIl2a, IIl2b will prevent both bell cranks makes an impression at the head of a column, -40

I65a, I651: from moving out of the position shown in Fig. 10 in which their arms I6 6a, I66b are below the level of the stepped lug I61.- Consequently the lever I69I10 will be free to move counterclockwise from the A position to the numerical position in which position it is shown in Fig. 10.

Fig. 10A is a diagrammatic plan of the lug I61 and the arms I660. I66b in this position.

If the A hole'is sensed, thebell crank I65a will be allowed to rock clockwise under the action of its spring H511 to a position in which its arm IGIiastands in the path of the step IBM and prevents the lever I69I10 from .moving out of the A position (Fig. 103) To this atithe brmtlng there is 'Ifthe B hole is sensed the bell crank I651) provided below the card a slightly raised fixed element or platen I63 (Fig. 8), this platen having a flat surface just suflicient to support the portion of the card on which printing is to be effected,-

this surfacebeing connected by a ramp to the portion of the machine over which the card ad vances step by step. As the card passes over this platen member, the portion of the card immediately over the platen is slightly curved or bulged up in relation to the rest of the card and 5 is rocked clockwise and its arm I66b moves to a position in which it stands in the path of the step I681) whereby the lever'I69-I1II is free'to move into the B position (Fig.

Pivoted on the rod is: are two arms I16, m a connected by a cross bar I18.

the arm I11 rocks counterclockwise about its pivot I32 and a lug"l16 on its upper end pushes 7 the hook member I5IIa for the A-B type lever I41a' clear of the actuating bail I52 whereby ment with the actuating bail I52 and this AB type lever will operate.

The question as to whether the A or B type shall print is determined by the position of the A and B bell crank arms I66a,*I66b. If the A hole alone occurs, then the A bell crank I65a alone is rocked and the free end of its arm I66a' obstructs the step I68a'in the lug I61 so that the lever I68, I10 remains in the A position. If the B hole alone is sensed then the arm I66b of the B bell crank I65b moves into register with the step I68b so that the lever I68, I10 asx sumes the B position.

Reference has already been made to the fact that when the A hole is sensed and the lever I68, I10 accordingly occupies the A position, the

pivot rod I46 for the type levers I41 is moved forward to a .firstposition which may be referred to as the A position whereas when the I52 rises but the extent of movement of the type levers I41 towards the card is not so great. In the first case the type levers are moved to an extent such that if any one of them is operated the lowermost type 200 will print (Fig. 9), whilst in the second case, the extent of movement is such that the middle type element I will print. If the rod I46 does not move at all the uppermost type element 202 will operate.

This movement of the type levers I41, I41a bodily towards the card by reason of the bodily shifting of their pivot rod I46 occurs simultaneously or contemporaneously with thelift of the actuating bail I62 so that any type lever of which the actuating hook I60 is in engagement with the actuating ball, will swing about its pivot I46 during the time in which the said pivot I48 is being moved bodily towards thecard. The

B hole is sensed and the lever I68, I10 accordingly moves to the B position, the pivot rod for the type levers is moved still further forward into what may be called the B position.

In order to effect this operation, the pivot rod I46 for the type levers I41 is carried at the upper wardly to which there is pivoted at I86 a bell 'crank I86, I81 having one arm I86 depending substantially vertically and maintained by a spring I86a in contact with the lever I10. When the lever I10 is in the numerical position, this bell crank I86, I81 is maintained with its other arm I81 clear of a notched plate I88 secured to the arm I53a of the actuating bail I52 for the type levers so that when this bail rises, to operate one or other of the type levers, the bell crank I86, I81 isunafiected, J

The notched plate I88 has an upper and a lower notch, lthe upper notch I80 being conveniently referred to as the A notch, while the lower notch I-8I may be referred to as the B notch. If the lever I10 moves to the B position, the bell crank I86, I81, will swing counterclockwise until the free end of its aim I81 engages with the B .case shifting motion therefore occurs contemporaneously with the actuation of the type lever so that by the time that the type lever has swung down about its pivot I46 on to the card, the case shifting movement is completed.

It has already been explained that when the middle type element 20I or the lowermost type element 200 prints, the upper type element 202 or boththe upper and middle'type elements 28I, 202 as the case may be, overhang thecard. Since the printing takes place at the head of a column, and there may be a hole in the first position from the edge of the card, the overhanging portion of the type element would overlie this hole. Consequently, according to the invention, means is provided for withdrawing the sensing pins IOI, IOIa, IOIb, before the type elements actually strike the card in order to prevent the top of a sensing pin from being struck by the descending type element. To this end, the bail II4 already referred to which withdraws the sensing pins, is timed to operate so that the pins are clear of the card just before the type elements strike the latter.

Each column of the card is sensed and the interpretation thereof is printed at the head of the column in the manner described above as the card carriage 28 moves step by step from right to left in Fig. 1.

As the carriage 28 approaches the left hand end of its travel in Fig. 1 the extension 46 of the toggle link 48 engages a fixed stop I82 adjustably attached to the frame I and the toggle 40, 48, straightens thereby opening the gripnotch I8I innthe notched plate I88. Consequently, this arm I81 of the bell crank, together with the arm -I53a of the type lever actuating bail I52 form what is in nature a-toggle and the riseof-theactuating bail straightens this toggle and since the bell crank I86, I81 is pivoted at I85 to the lower end of the downwardly inclined extension I84 of the arm I80 carrying the type lever pivot rod I46, this downward extension I84 is rocked about its pivot I24 and takeswith it the two arms I80, I8I carrying the type-lever pivot rod I46 so that the type levers I41, 111

move to a greater extent and its free end I81 will engage the A notch I80. The same action pers 28, 28a and releasing the card which has been-sensed. I

The card is then ejected by an ejector arm I88 which is screwed to an operating arm I84- pivoted at I85 to a bracket I86 secured to the frame I.

the grippers 28,-.28a (Fig. 3).

"pers have opened to release the card the carriage 26 jumps to the left (Fig. 3) and the edge I88, by engagement with the arm I84 rocks the ejector arm clockwise thereby sweeping'the card out laterally into a receiver (not shown). A spring I88 returns the ejector arm I88 to the position of Fig. 3 after the carriage 26 has re turned a short distance to the right in Fig; 3.

'The shaft 50 is driven from a motor 288 by belts and pulleys 204, 206, 208, 201, 288 and 288. the shaft 2! for the pulleys 208 and 201 being mounted on a bracket 2 secured to the machine frame. The supply of current to the motor 208 is controlled by a tumbler switch -2I2 as before-then occurs when the actuating ball which is operated as follows.

The arm I84 hasa lug I81 which stands in the path of the-left hand edge I88 of After the grip- Pivoted on a rod 2l3 mounted in two plates 2, 2| 5 secured to the base of the machine is a stirrup member 2l 6, 2I6a and projecting from the arm 2|6 of the stirrup member is an operating handle 2". Pivoted to the plates 2, 2| 5 at 2l8, MM. is another stirrup member 2|9 having a hole 220 through which projects the operating knob 22I of the switch. Pivoted to the stirrup arm 216 at 223 is a. link 224 which is pivoted to one arm of the stirrup H9 at 225.

In the drawings'the switch is shown in the closed position, and a spring 226 is provided which tends to rock the bail clockwise in Fig. 2

(counterclockwise in Fig. 1). The'link 224 however holds the switch in the open position until the stirrup 2l6 is rocked counterclockwise in Fig. 1 to a predetermined extent by means of the handle 2!! after which the spring 226 snaps the switch into the open position.

Associated with the switch 2i2 is a mechanism for opening the switch to stop the motor when the machine runs out of cards.

Pivoted in the rod 2l3 is a link 22! carrying at its upper end a pin 228 Pivoted to the pin 228 is a short lever 229 to which is pivoted at 230 a link 23l' of which the lower end is pivoted at 232 to one arm 233 of a lever pivoted to the link 22! at 234. The other arm 235 of the lever 233-235 extends downwardly and terminates in a hook 235. Y

A spring 231 is' attached to the link 22! and urges it clockwise in Fig. 2, a stop pin 238 being provided to limit this movement.

The pin 228 stands in the path of the lug 42 depending from the lower gripper 29a and as the carriage 26 moves to the right in Figs. 1 and 3 the lug 42 engages the pin 228- and rocks the link 22'! clockwise about the pivot 2l3.

The plunger rod 24 of the dashpot 25 carries a collar 24!! near its lower end and resting on a taper pin 24! passing through the rod 24 is a washer 242 of which the internal diameter is larger than that of the rod so that an annular space 243 is left.

When the carriage 25 returns to the right in Fig. 2 the rod 24 rises and the oil within the dashpot 25 keeps the washer 2 down against the pm 242 so that the oil can flow under the collar 240 and through the annular space 243 thereby permitting a relatively oi the carriage 26. v The ribbon feed mechanism which is of usual form includes the usual feed pawl which is operated from a lever 250 secured to the shaft I! through a link 25l pivoted to one arm of a bell crank 252 pivoted to the frame at 253 and oi which the other arm is connected to the feed 'pawl by a link 254.

Since the sensing pins are connected to the type lever control mechanism by means of Bowden cables the type levers may be disposed in any desired position relative to the sensing pins and accordingly the invention is not limited to constructions in which the type elements print upon the record which controls them.

I claim:

A record card controlled typewriting mechanism comprising in combination a platen, a pivot member, a plurality of type levers freely mounted on said pivot member in cooperative relation with said platen, means for sensing one column of a record card, means for traversing a record card column by column past said senssame column, to shift the pivot for the type levers so that, when the selected type lever operates, a different character strikes the printing surface, and m eans for actuating the selected type lever, all said type levers being so disposed relatively. to the sensing means that any type lever selected for operation under the control of the sensing means prints in the same column of the record as that of which the sensing caused selection of the operative type lever. V

RICHARD EVEREST BALDWIN.

rapid movement 

